Deterministic 3D seismic damage analysis of Guandi concrete gravity dam: A case study

被引：53

作者：

Wang, Gaohui ^{[1
,2
]}

Wang, Yongxiang ^{[3
]}

Lu, Wenbo ^{[1
]}

Yu, Mao ^{[4
]}

Wang, Chao ^{[4
]}

机构：

[1] Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China

[2] China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China

[3] Columbia Univ, Dept Civil Engn & Engn Mech, New York, NY 10027 USA

[4] Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300072, Peoples R China

来源：

ENGINEERING STRUCTURES | 2017年 / 148卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Concrete gravity dam; Three dimensional analysis; Contraction joint nonlinearity; Damage-cracking evaluation; Dam-reservoir-foundation interaction; NONLINEAR DYNAMIC-RESPONSE; ARCH DAMS; EARTHQUAKE ANALYSIS; SAFETY EVALUATION; PREDICT CRACKING; GROUND MOTIONS; MODEL; SYSTEMS; SENSITIVITY; PERFORMANCE;

D O I：

10.1016/j.engstruct.2017.06.060

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents an original investigation of the seismic cracking behavior of Guandi concrete gravity dam, which is located in the highly seismic zone of China. For this purpose, three dimensional nonlinear finite element analyses are carried out for the Guandi dam-reservoir-foundation system, with the effects of contraction joints and cross-stream seismic excitation considered. The Concrete Damaged Plasticity (CDP) model is utilized to model concrete cracking under seismic loading. The opening/closing and sliding behaviors of contraction joints during earthquake events are modeled using two different surface-tosurface contact models (soft and hard pressure-clearance relationships), which aims to quantify the effect of grouting materials between the joint surfaces. The dynamic interaction between the impounded water and the dam-foundation system is explicitly taken into account by modeling the reservoir water with three dimensional fluid finite elements in the Lagrangian formulation. Several case studies are examined and the results reveal the significant influence of contraction joints and cross-stream ground motions on the dynamic response and damage-cracking risk of the Guandi concrete gravity dam. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：263 / 276

页数：14

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